October 2007
Intermediate to advanced
1308 pages
161h 13m
English
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ClientCertFile
File containing the client’s public certificate V8.11 and later
STARTTLS and stream encryption are discussed in detail
in STARTTLS on page 202. Among
the items you might need to create, or purchase, to
set up stream encryption is a certificate for your
client side. A client certificate is used by
sendmail when it is acting in
the role of a sender (dispatching outbound email).
It is contained in a file whose location is set with
this ClientCertFile option, using
declarations that look like this:
O ClientCertFile=path ← configuration file (V8.11 and later) -OClientCertFile=path ← command line (V8.11 and later) define(`confCLIENT_CERT',`path') ← mc configuration (V8.11 and later)
Here, path is a full path
specification of the file containing the
certificate. The path can
contain sendmail macros, and if
so, those macros will be expanded (their values
used) when the configuration file, or command line,
is read:
define(`confSERVER_CERT', `${MyCERTPath}/ClntCert.pem')The path must be a full
pathname (must begin with a slash), or the file will
be rejected and the following error logged:
STARTTLS: ClientCertFile missing
The path must also live in
a directory that is safe (every component of which
is writable only by root or the
trusted user specified in the TrustedUser option) and
must itself be safe (owned by and writable only by
root or the trusted user
specified in the TrustedUser option; see TrustedUser on page 1112). If it is not, it will be rejected and the following error ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.